Frozen light beam

“Earlier, he had read a children’s book, Aaron David Bernstein’s Popular Books on Natural Science, that asks you to imagine racing alongside a telegraph wire. Instead, Einstein envisioned running along a light beam, which should look frozen. Racing neck and neck alongside the beam, the light waves should be stationary, he thought, as Newton might have predicted. But even as a sixteen-year-old boy, Einstein realized that no one had ever seen a frozen light beam before. Something was missing. He would ponder this question for the next ten years.”

Excerpt From: Michio Kaku. “The God Equation.” – Amazon Link